17-4PH HEAT TREATMENT
17-4PH HEAT TREATMENT
(OP)
I'm not familiar with MIL specs. I was waondering if the following metal gets heat treated:
[UNS S17400(17-4PH) per ASTM A564 aged to condition H1150]. The bar that we received said 17-4 condition A. and also do we machine this part before heat treat if it gets heat treated. How does it react in heat treat? Any information would be helpful. Thanks ahead of time. The brackets denote the part print note.
[UNS S17400(17-4PH) per ASTM A564 aged to condition H1150]. The bar that we received said 17-4 condition A. and also do we machine this part before heat treat if it gets heat treated. How does it react in heat treat? Any information would be helpful. Thanks ahead of time. The brackets denote the part print note.





RE: 17-4PH HEAT TREATMENT
RE: 17-4PH HEAT TREATMENT
The grade is difficult to machine, on par with 300 series stainless. There is a predictable, uniform contraction of about 0.0008" / inch when aged at 1150, so if your tolerances are very tight, you should probably age the material first, then machine it. Actually, if you age it first, it will be slightly easier to machine. No stress relief is required after machining.
RE: 17-4PH HEAT TREATMENT